The invention discloses ultrafine crushed raspberry jam. The ultrafine crushed raspberry jam is prepared by the following ingredients in parts by weight: 920 to 990 parts of raspberry, 30 to 60 parts of orange peel or 5 to 15 parts of orange powder and 10 to 20 parts of milk powder, and the ultrafine crushed raspberry jam also contains 4 to 20 micro/L pectin methylesterase. The invention also discloses a preparation method of the ultrafine crushed raspberry jam. The preparation method comprises the following steps of selecting and washing raspberry, ultrafine crushing the raspberry, mixing, vacuum concentrating the raspberry at low temperature, filling, sealing and sterilizing. The fresh raspberry is ultrafine crushed, the pure natural orange peel is used for substituting the food additive, the milk powder and pectin methylesterase are added, so that the product has the characteristics of natural ingredients, low sugar, high nutrients, thick flavor and fine taste, and the weaknesses of the common jam that the sugar is high, the yield is low and the nutrient is low can be overcome.